Error When Installing Libv8 3.11.8.3

Error installing libv8: ERROR: Failed to build gem native extension

try this one:

gem install libv8 -v '3.16.14.3' -- --with-system-v8

Note : Because libv8 is the interface for the V8 engine used by therubyracer,
you may need to use libv8, even if you have V8 installed already. If
you wish to use your own V8 installation, rather than have it built
for you, use the --with-system-v8 option.

For more you can go through the documentation of libv8 on github

OpenBSD unable to install therubyracer gem ERROR: Failed to build gem native extension

I was unable to install therubyracer gem in OpenBSD. As a workaround, I replaced it with the nodejs javascript runtime:

gem 'node'

Make sure to remove the gem 'therubyracer' line.

therubyracer install error

You can use the Libv8 from the brew instead of the one from gem. You can do that by following commands:

$ gem uninstall libv8
$ brew install v8
$ gem install therubyracer

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